Nathan Loding

For those that stumble on this, here's a working Dockerfile and command. Note: I did not test running the GUI, per Kayvan's notes; I only used tcscid to do some command-line database work. Dockerfile: # Copied from: https://github.com/ksylvan/scidvspc FROM debian:trixie-slim ENV SCID_VERSION=4.26 ADD https://downloads.sourceforge.net/project/scidvspc/source/scid_vs_pc-${SCID_VERSION}.tgz /home/scid/ COPY ./test/data/five.pgn /home/scid WORKDIR /home/scid RUN if [ ! -d scid_vs_pc-${SCID_VERSION} ];...

Wait, I'm silly - I focused entirely on the "package require Tk 8.5" line and not the mention of $DISPLAY above. Resolved! I needed to start the container interactively and grab a shell, because I didn't set up the display.

Kayvan's Dockerfile is a bit out of date - it's using version 4.16 and an older version of Debian that is no longer supported - so I decided to update it. I changed the Debian distro to trixie-slim and the Scid version to 4.26 ... and when the container tries to start /usr/bin/local/scid it gets this error and exits: application-specific initialization failed: no display name and no $DISPLAY environment variable Error in startup script: no display name and no $DISPLAY environment variable while executing...